Puppy Love
小情书 (original)
An innocent love triangle set in the senior year of high school. The protagonist forged an innominate love letter to his best friend as a practical joke. The friend took the love letter seriously, and it affected him greatly. To help his friend get back to normal, the protagonist asked the Hongying, a girl who he secretly has a crush on, pretending to be the author of letter.
Starring Zhao Shunran, Zhu Yan Man Zi
It's a drama and romance movie, and has a rating of 6.6 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Switzerland.